diff --git a/tasmota/tasmota_ca.ino b/tasmota/tasmota_ca.ino
index a3377b305..990a0f970 100644
--- a/tasmota/tasmota_ca.ino
+++ b/tasmota/tasmota_ca.ino
@@ -85,6 +85,66 @@ static const br_x509_trust_anchor PROGMEM LetsEncryptX3CrossSigned_TA = {
 	}
 };
 
+/*********************************************************************************************\
+ * LetsEncrypt R3 certificate, RSA 2048 bits SHA 256, valid until 20250915
+ *
+ * https://letsencrypt.org/certificates/
+ * Downloaded from https://letsencrypt.org/certs/lets-encrypt-r3.pem
+ *
+ * to convert do: `bearssl ta lets-encrypt-r3.pem`
+ * then copy and paste below, chain the generic names to the same as below
+ * remove "static" and add "PROGMEM"
+\*********************************************************************************************/
+
+static const unsigned char PROGMEM LetsEncryptR3_DN[] = {
+	0x30, 0x32, 0x31, 0x0B, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x06, 0x13,
+	0x02, 0x55, 0x53, 0x31, 0x16, 0x30, 0x14, 0x06, 0x03, 0x55, 0x04, 0x0A,
+	0x13, 0x0D, 0x4C, 0x65, 0x74, 0x27, 0x73, 0x20, 0x45, 0x6E, 0x63, 0x72,
+	0x79, 0x70, 0x74, 0x31, 0x0B, 0x30, 0x09, 0x06, 0x03, 0x55, 0x04, 0x03,
+	0x13, 0x02, 0x52, 0x33
+};
+
+static const unsigned char PROGMEM LetsEncryptR3_RSA_N[] = {
+	0xBB, 0x02, 0x15, 0x28, 0xCC, 0xF6, 0xA0, 0x94, 0xD3, 0x0F, 0x12, 0xEC,
+	0x8D, 0x55, 0x92, 0xC3, 0xF8, 0x82, 0xF1, 0x99, 0xA6, 0x7A, 0x42, 0x88,
+	0xA7, 0x5D, 0x26, 0xAA, 0xB5, 0x2B, 0xB9, 0xC5, 0x4C, 0xB1, 0xAF, 0x8E,
+	0x6B, 0xF9, 0x75, 0xC8, 0xA3, 0xD7, 0x0F, 0x47, 0x94, 0x14, 0x55, 0x35,
+	0x57, 0x8C, 0x9E, 0xA8, 0xA2, 0x39, 0x19, 0xF5, 0x82, 0x3C, 0x42, 0xA9,
+	0x4E, 0x6E, 0xF5, 0x3B, 0xC3, 0x2E, 0xDB, 0x8D, 0xC0, 0xB0, 0x5C, 0xF3,
+	0x59, 0x38, 0xE7, 0xED, 0xCF, 0x69, 0xF0, 0x5A, 0x0B, 0x1B, 0xBE, 0xC0,
+	0x94, 0x24, 0x25, 0x87, 0xFA, 0x37, 0x71, 0xB3, 0x13, 0xE7, 0x1C, 0xAC,
+	0xE1, 0x9B, 0xEF, 0xDB, 0xE4, 0x3B, 0x45, 0x52, 0x45, 0x96, 0xA9, 0xC1,
+	0x53, 0xCE, 0x34, 0xC8, 0x52, 0xEE, 0xB5, 0xAE, 0xED, 0x8F, 0xDE, 0x60,
+	0x70, 0xE2, 0xA5, 0x54, 0xAB, 0xB6, 0x6D, 0x0E, 0x97, 0xA5, 0x40, 0x34,
+	0x6B, 0x2B, 0xD3, 0xBC, 0x66, 0xEB, 0x66, 0x34, 0x7C, 0xFA, 0x6B, 0x8B,
+	0x8F, 0x57, 0x29, 0x99, 0xF8, 0x30, 0x17, 0x5D, 0xBA, 0x72, 0x6F, 0xFB,
+	0x81, 0xC5, 0xAD, 0xD2, 0x86, 0x58, 0x3D, 0x17, 0xC7, 0xE7, 0x09, 0xBB,
+	0xF1, 0x2B, 0xF7, 0x86, 0xDC, 0xC1, 0xDA, 0x71, 0x5D, 0xD4, 0x46, 0xE3,
+	0xCC, 0xAD, 0x25, 0xC1, 0x88, 0xBC, 0x60, 0x67, 0x75, 0x66, 0xB3, 0xF1,
+	0x18, 0xF7, 0xA2, 0x5C, 0xE6, 0x53, 0xFF, 0x3A, 0x88, 0xB6, 0x47, 0xA5,
+	0xFF, 0x13, 0x18, 0xEA, 0x98, 0x09, 0x77, 0x3F, 0x9D, 0x53, 0xF9, 0xCF,
+	0x01, 0xE5, 0xF5, 0xA6, 0x70, 0x17, 0x14, 0xAF, 0x63, 0xA4, 0xFF, 0x99,
+	0xB3, 0x93, 0x9D, 0xDC, 0x53, 0xA7, 0x06, 0xFE, 0x48, 0x85, 0x1D, 0xA1,
+	0x69, 0xAE, 0x25, 0x75, 0xBB, 0x13, 0xCC, 0x52, 0x03, 0xF5, 0xED, 0x51,
+	0xA1, 0x8B, 0xDB, 0x15
+};
+
+static const unsigned char LetsEncryptR3_RSA_E[] = {
+	0x01, 0x00, 0x01
+};
+
+static const br_x509_trust_anchor PROGMEM LetsEncryptR3_TA = {
+	{ (unsigned char *)LetsEncryptR3_DN, sizeof LetsEncryptR3_DN },
+	BR_X509_TA_CA,
+	{
+		BR_KEYTYPE_RSA,
+		{ .rsa = {
+			(unsigned char *)LetsEncryptR3_RSA_N, sizeof LetsEncryptR3_RSA_N,
+			(unsigned char *)LetsEncryptR3_RSA_E, sizeof LetsEncryptR3_RSA_E,
+		} }
+	}
+};
+
 /*********************************************************************************************\
  * Amazon Root CA, RSA 2048 bits SHA 256, valid until 20380117
  *
@@ -160,6 +220,18 @@ const br_x509_trust_anchor PROGMEM Tasmota_TA[] = {
 		}
 	}
 	,
+	{
+		{ (unsigned char *)LetsEncryptR3_DN, sizeof LetsEncryptR3_DN },
+		BR_X509_TA_CA,
+		{
+			BR_KEYTYPE_RSA,
+			{ .rsa = {
+				(unsigned char *)LetsEncryptR3_RSA_N, sizeof LetsEncryptR3_RSA_N,
+				(unsigned char *)LetsEncryptR3_RSA_E, sizeof LetsEncryptR3_RSA_E,
+			} }
+		}
+	}
+	,
 	{
 		{ (unsigned char *)AmazonRootCA1_DN, sizeof AmazonRootCA1_DN },
 		BR_X509_TA_CA,